Drilling mechanism



June 6, 1933". c. F. OSGOOD DRILLING MECHANISM Original Filed Marbh 8,1924 practice.

combined couplin 'nism.

Patented June 6, 1933 UNITED s'rArEs v PATENT orrlcs r. oseoon,oronaamlonr, zmw mama. assroxon. "ro sunuvau n! comm, a oonrona'rron orxassaonusms nmnmo uaonnmsu Application ma larch a, 1m, Serial no.001,941. Renewed April 10. 1931 My invention relates to drilling media-It has for its object to provide an improved drilling mechanism and moreparticularly an improved drilling mechanism especially ada ted to use indeep well work such as in dril ing for oil or gas. A further objectof myinvention is to provide improved means for guiding the'drlll line, thesame herein bein also especially adapted for use with mud uid and forcooperation with a core barrel. These and other objects of my inventionwill hereinafter morefully appear.

In the accompanying drawing I have shown for urposes'of illustrationseveral forms whicli my invention may assume n In the drawing,-

Fig. -1 is a side elevation partially in longitudinal section showingone form of my improvement. p

Fig. 2 is a transverse sectional view on line 2-2 of Fig. 1. T

Fig. 3 is a transverse sectional view on line 3 ,-3 of Fig. 1. V I

Fig.4 is a side elevation ofa modified form of construction. a

Fig. 5 is a similar view of a fled form. t

In the illustrative construction, shown in Figs. 1 to 3, I have shown adrill rod line 1 having an external coupling 2 threaded on the reducedinner end of the innermost rod section and likewise threaded on thereduced outer end of a suitable core barrel 3. ThlS member 2 is hereinalso provided with a sefurther modiriesof longitudinal flutes 4cooperating to form wings 5, of the same or substantially the sameexternal diameter as the core barrel bit hereinafter mentioned, and thusform a and guide .havin passages therethroug for the assage o mud fluid.It will also be noted at as usual in a well known type of core drill,the core barrel 3 carries at its lower end a bit 6 of the win ed type,having wings 7 formed b suita le straight longitudinall disposed utes 8between the same, the utes being of substantially the same area as theflutes in the member 2, while other mud fluid passages 9 are provided inthe inner periphery of the bit. As in a usual construction, the bit 6 isalso threaded tothe lower end of the core barrel and the latter carriestherein a suitable core lifter 10. Thus, considering the members 2 and6, it will be noted that these members cooperate to provide guiding andmud fluid passage means at opposite ends of the core. 7

barrel and thus create a construction which keeps the core barrel in thedesired rectilinear path at the same time that it'permits the mud fluid,which in practice is assed down through the rod line, the core arrel 3and passages 9 in the bit, to pass freely upward along the outside ofthe rod line, the flutes 8 in the bit and flutes 4 in the couplingpermitting free movement thereof.

In Fig. 4 I have illustrated a modified construction in which it will benoted that a sec- 0nd coupling 2 is disposed between the ends of thecore barrel 3, the latter in this construction being capable of beingmade in two parts 11 and12 if desired, although the memer 2 mayobviously be suitably fixed to the exterior of a single piece corebarrel tube in function then of course being eliminated. In thisconstruction it will .be observed that the extra member 2 serves as anextra guiding member supplementing the bit 6, and the rel to therodline. In Fig. 5 I have shown a further modified construction in whichrod line may be connected by such improved members 2.

As a result of my improved construction it will be noted that allnecessity for roviding an elongated grooved section on t e core barrel,or of grooving the entire length of the barrel as has heretofore beendone in certain instances, is eliminated, the member 2 coop 1 15 anysuitable manner if desired, thecoupling so guiding member 2 connectingthe core bar-1 desired any desired number of sections of the erating inthe form shown in Fig. 1 with a bit to make an intermediate guidingportion unnecessary and thereby materially reducing the cost of thebarrel at the same time that While I have in this application specifically described several forms which my invention may assume in practice,it will be understood that these forms of the same are shown forpurposes of illustration and that the invention may be modified andembodied in various other forms without departing from its spirit or thescope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a drilling mechanism, a rod line, a tubular core barrel, anannular winged core cutting bit detachably connected to the inner end ofsaid barrel, and a detachable coupling member connected to and rotatablewith said barrel for detachably connecting the outer end of said barrelto said rod line, said coupling member being of a diameter substantiallylarger than said rod line and core barrel and having externally enlargeduiding wings substantially fitting the drill ole cut member and bithaving by the bit and slidably engaging, with a purely guiding function,the walls of the drill hole as the drill is fed inwardly, said couplingfluid passages between the wings thereon.

2. In a drilling mechanism, a sectional rod line, a tubular core barrel,an annular winged core cutting bit detachably connected to the inner endof said barrel, and a plurality of longitudinally spaced detachablecoupling members carried on and rotatable with the rod line and disposedabove said bit, said coupling members detachably connecting the rod linesections and each being of a diameter substantially larger than the rodline and core barrel and having externally enlarged guiding wingssubstantially fitting the drill hole cut by the bit and slidablyengaging, with a purely guiding function, the walls of the drill hole asthe drill is fed inwardly, said coupling membersand bit having fluidpassages between the wings thereon.

3. In a drilling mechanism, a rod line, a tubular core barrel, anannular winged core cutting bit detachably connected to theinner end ofsaid barrel, a detachable coupling member connected to and rotatablewith said barrel for detachably connecting the outer end of said barrelto said rod line, said coupling member being of a diameter substantiallylarger than said rod line and barrel and having externally enlargedguiding Wings substantially fitting the drill hole cut by the bit andslidably engaging, with a purely guiding function, the walls of thedrill hole as the drill is fed inwardly, and a supplemental wingedmember spaced longitudinally from said winged coupling member, saidmembers and said bit having fluid passages between the wings thereon.

\ 4. In a drilling mechanism, a rod line, a tubular core barrel, anannular winged core cutting bit detachably connected to the inner end ofsaid barrel, a detachable coupling member connected to and rotatablewith the barrel for detachably connecting the outer end of said corebarrel to the rod line, said coupling member being of a diametersubstantially larger than said rod line and core barrel and havingexternally enlarged guiding wings substantially fitting the drill holecut by the bit and slidably engaging? with a purely guiding function,the walls of the drill hole as the drill is fed inwar'dly, and asupplemental externally, enlarged winged guiding member spacedlongitudinally from 'said winged coupling member and carried by androtatable with'the rod line, said members and said bit having fluidpassages between the Wings thereon.

5. In a drilling mechanism, a rod line, a tubular core barrel, anannular winged core cutting bit detachably connected to the inner end ofsaid barrel, and a detachable coupling member connected to and rotatablewith said barrel for detachably connecting the outer end of said barrelto the rod line, said coupling member being of a diametersubstantially'larger than said rod line and barrel and having externallyenlarged straight longitudinally extending wings substantially fittingthe drill hole cut by the bit and slidably engaging, with a purelyguiding function, the walls of the drill hole as the drill is fedinwardly, and fluid passages between the wings on said coupling membersand said bit.

6. In a drilling mechanism, a sectional rod line, a tubular core barreldetachably connected to said rod line, an annular core cuttin bitdetachably connected to the inner end 0 said barrel, and externallyenlarged detachable coupling members connected to and rotatable with therod line for detachably connecting .the sections of said rod line andsaid barrel to said rod line, said coupling members being of a diametersubstantially larger than said rod line and barrel and having guidingwings formed externally thereon and substantially fitting the drill holecut by the bit and slidably engaging, with a purely iding function, thewalls of the drill hole as the drill is fed inwardly,

and fluid passages between the wings on said members. Y Y

7. In a core drill, a rod line, a tubular core barrel and an annularcore cutting bit detachably secured thereto at its inner end, and acombined detachable coupling and guide member connected to and rotatablewith said barrel for detachably connecting the outer end of said barrelto the rod line, said coupling and guide member being of a diametersubstantially larger than said rod line and barrel and substantiallyfitting the drill hole cut by the bit and slidably engaging, with apurely guidingi function, the walls of the drill hole as'the rill is fedinwardly, said coupling andguide member,

having externally enlarged guiding wings and fluid assages between thewings.

8. In a rilling mechanism, a sectional rod line, a core barreldetachably connected I thereto, an annular core cutting bit detachablyconnected to said barrel, and externally enlarged detachable couplingmembers con-. nected to and rotatable'with the rod line for detachablyconnecting the sections of said rod line together and said barrel tosaid rod line, said cou ling members being of a diamannular core cuttingbit attached to the inner end of the core barrel, and guiding means forthe rod line and core barrel com rising guide members attached to therod ine at spaced points along its length, said guide members being of adiameter substantially larger than the rod line and barrel and subholecut by the bit and slidably engaging;

with a purely guidmg function, the wal CHARLES F. OSGOOD.

stantially fitting the drill hole cut by the bit and slidably engaging,with a purely guiding function, the walls of the drill hole as the drillis fed inwardly said guide members having externally enlarged guidingwings and fluid passages between the wings thereon.

10. In a core drill, a rod line, a tubular core barrel detachablyconnected to the in-

